Fishing rod supporting device



FIG. 1 is a side, elevational view of a fishing rod supporting device showing my new design;

FIG. 2 is a top, plan view thereof;

FIG. 3 is a front, elevational view thereof;

FIG. 4 is a bottom, plan view thereof; and

FIG. 5 is a back, elevational view thereof. 

The ornamental design for a fishing rod supporting device, as shown and described. 